What is CVE-2026-78466?

CVE-2026-78466 is a medium-severity vulnerability in Fluent Boars Boards Pro, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-25.

How severe is CVE-2026-78466?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Fluent Boars Boards Pro

CVE-2026-78466

The Fluent Boards Pro plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.0.11 due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform an unauthorized action.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Fluent Boars Boards Pro

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-78466?: CVE-2026-78466 is a medium-severity vulnerability in Fluent Boars Boards Pro, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-25.
How severe is CVE-2026-78466?: Medium severity. CVSS v3 base score is 4.3 out of 10.